Ernst kratz



(No Model.)

E. KRATZ.

I NEEDLE.

No. 324,030. Patented Aug; 11, 1885.

WITNESS IIVVE/VTOI? ATTUR/VEY N ravens Photo-Lithograph", wmm m. ac

NITED' STATES PATENT OFFICE.

ERNST KRATZ, OF MARBURG, GERMANY.

NEEDLE.

SPECIFICATION forming part of Letters Patent No. 324,030, dated August11, 1885.

Application filed November 8, 1884. (N0 model.) Patented in Germany May11, 1883, No. 25,424; in England March 20. 1884, No. 5,221; in BelgiumMarch 31, 1884, No. 64,583, and in France June 27, 1884, No. 161,089.

To all whom it may concern.-

Be it known that I, ERNST KRATZ, a subject of the Emperor of Germany,and a resident of Marburg, in the Empire of Germany, have inventedcertain new and useful Improvements in Sewing -Needles, (for which Ihave obtained a patent in Germany, No. 25,424, bearing date May 11,1883; in Belgium, No. 64,583, bearing date March 31, 1884; in England, aprovisional protection hearing date March 20,1884; in France,a patent,No.161, 089, bearing date June 27, 1884,) of which the following is aspecification.

My invention relates to improvements in sewing-needles, to the eye ofwhich is led from the outside of the needle a slot for introducing thethread laterally with any part of its length, and has for its object tofacilitate the opening of this introducing-slot.

Figures 1 and 2 of the accompanying drawings show the rear or heel endof the needle to which my invention is applied,and Fig. 3 a sideelevation thereof.

In all needles a split, 1), is departing from the needle-eye c, whichsplit is opposite or nearly opposite to the introducing-slot a, andforms the essential feature of my invention, for it facilitates in ahigh degree the opening of the slot (0 when the thread is pressedthrough the latter into the needle-eye. The needle shown in Fig. 1represents hand sewing-needles, and Fig. 2 shows a needle for surgicalpurposes.

For facilitating the introduction of the strained thread into the slota, a notch, d, may be arranged at the outer end of slot a, which lattermay be either centralor lateral with regard to the needle-eye c. In allcases the ends of the needle-eye c are so shaped that under sewingneither the introducing-slot 11 nor the opening-split b can be opened bythe tension of the thread.

As it offers great difficulties to produce the split 1) by the usualmeans which are employed for making slot a, I produce the split 1) inthe manner shown.

Under the needle-eye c is bored a hole, 6, being separated from 0 onlyby. a narrow bridge, and, moreover, are both sides of the needle overthe eye 0 and the hole 6 hollowed longitudinally, as shown atf, so thatthe narrow bridge resting between a and e becomes very thin in itsmidst, and the split 1) may therefore be very easily cut at this point.

I claim as my invention As an article of manufacture, the sewingneedleherein described, the same consisting of a needle having the slottedhead a, eye 0, hole 6 below the same, and connected with the said eye bya slit, b, as set forth.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

ERNST KRATZ.

\Vitncsses:

J. G-RUND, A. S. HOGUE.

